OSC 226.4(c)(1)
3. Payment amount. The dollar amount of any payment includes statements such as:
• "Payable in installments of $103."
• "$25 weekly."
• "$1,200 balance payable in 10 equal installments."
In the last example, the amount of each payment is readily determinable, even though not explicitly stated. But statements such as "monthly payments to suit your needs" or "regular monthly payments" are not covered.
IMO, "payments as low as $xx" is not a triggering term by itself. There is nothing in the statement that can be "readily determinable".
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The opinions expressed are mine and they are not to be taken as legal advice.